Car-ventilating system.



1). Llcooxn. GAR VENTILAIING SYSTEM. APPLICATION FILED APR. 26, 1909. I

Patented Aug. 31. 190.9,

b1ven761? y KM I 5y v I 71 516 1). I. 0001m- GAB VENTILATING SYSTEM. A'PiLIUATION FILED AP R. 26, 1909.

Pafienfed Aug. 31, 1909. g:

43 SHEETS-S 2. v

D I: 000KB. GAR' VENTILATIHG SYSTEM. APPLIOATIOII rgr nn APR. 26, 1909.

932,761. Patented Aug. 31, 1909.

3 SHEETS-SHEET 3.

Be h. lmpw 'nethat I. Dwuurr Specification of Letters: Patent. Patentedihig. '3 1, 1 909a Application filed April '26, 1909. Q seriai No. 492,108.

To all whom 'itiazqilfi eoncernf I. (Jooun, a

eitigerr 'of tlie United States,- residing. at Chi ago ih me county of Cookmnd State'of llllugij na'vc invented 'certainfnew and 'use- ,Iuf Improrcn'ients 'in Car-V01ltilatingSys tems, of which the following is a specifica,

tion.

This improved ventilating system. is appl cable for use more especially with Pull .m an, passenger and'street cars. a ()ne of.the essential ob ect-s isyto provide a ":com-pact, concealed ventilating construction 1 1ch will not interfere In anyway with the ntstandard type of car.- lnot'her object is to provide simple and fficlent means for regulating the. flow of J*'exhaust" vitiatcd air from the car body.

munication with car heaters in the T1011 of' Another object is to position and construct and passagesin comthe .temperature of the admitted ,air being lnfiueuced by its passage over and through the same. e

Other obj cats will appear 'from a' detailed the fresh air intakes description of the invention, which consists.

features of construction and combina- I parts 1 hereinafter describedand claimed. f m

In the drawings, Figure-1 is a side eleva tion ofthis improved car ventilatingsystem as applied to a'street-car of the Payasyou. enter tpye; Fig. 2 atop or plan view thereof, the upper roof section bein re;-- movedyFig. 3 a sectional elevation one" end of the car; Fig. 4 a transverse section, taken on line -14 of'Fig. 3; Fig. 5 a transverse section, showing'amodified 'form.-of,

duct constructed in the roof 'of' the car,

- together with amodified position of fresh air intakes; Fig. 6 a detail of one-of the 'ex-' haust air regulators, looking down from the .top ofthe car; Fig.7,a similar view, looking at the device from within the car; and-Fig. 8 a' transverse-section, taken online 8;-'8-of Fig.6.

This proved car ventilating 'systemf is installed as shown-in a passenger street car 9- of the .Pay as you'ent erf type. The body of the car has. a seriesof fresh air intakes 10 formedjn the lower side walls 11 of the car, inproximity to the car floor 12.

Thesefresh'air intakes, for practical purposes, are usually positioned in proximity to v electric car heaters 13., secured beneath the car seats 14. asshown in Fig. 4, the fresh air' intakes each having an air 'passage Lfileadsecured to a transverse" frame opposite sides-of the fan.

ing into an airchamber 16 inclosing the electric car heaters 13, the farther end of said chamber having an exhaust orifice 17 for permitting the -tempere'd'--;fresh air to escape into the car body.

fioor '12, and air chambers 19 are in comnmmcation both with the car floor and elec-' withi'n suitable casings or chambers 21 hav- "mg, as shown, exhaustorifices 22- at their opposite ends for permitting the admitted tempered air to flow into the car, body.

Referring to Fig. 5,;fresh air intakes 18* are formed along the outer sidesofth'ecar- .65 .t'rlc carheaters 2t),whicharelikewise-incased It is to be understood that the number of fresh air'intakes positioned in the lower level offthe car may be such that their aggregate area will admit of the passage of the fresh :air to the car body proper at avelocity of not to exceed 300 feet per minute,- as a greater velocity would tend to produce a perceptible draft,.which the useof this sys- I tem eliminates.

.Within the car roof 23jis formed a concealedexhaust chamber 24 by means of a supplemental transverse ro'of'25, as illustrate'd'in Fig.'. 5,'the outer lon 'itudina-lside I walls'26 thereof being upwardly turned and or brace 27,

which '-in turn is secured to the car roof. As

indicated,- the sidewalls 26 of this supplemental roof areproportioned and secured in such manner as not to -int'erfere with the movement and operation of the ventilator. deck sash windows. 28. This supplemental roof 25, asbest shown in-Fig. 2, has a series of register faces 29, formed therein, prefer-- ably-equidistant apartand parallel to each other; and where 1t is desirable to ventilate the end sections or platforms or a car additional register faces 30 may be employed.v The .total free areaof these registers is so calculatedas to permit of the flow of. air through the same taking place at a velocity of'not'to exceed 300 feet 'per minute, as :1 ve--" locity in excess of this would tend to produce 1 I a perceptible draft. As; shown, the front end of the exhaust chamber-merges intoan.

elongated fan chamber 31ihaving an exhaust 10 .fan 32 actuatediby an'electridmotor' 33,01? otherwise as 'desired,;the'fan ehamberhalv-f ing exhaust ports 34am %5, respectiyely, onl i In the ventilation .o f passenger cars, iti's' essentialthat' the flow and travel-10f the ad-i fmitted air; be accurately 're gulatednisi'nee 5 V Lat is conducive to both the health and comfort of the passengers. Accordingly, the

- speed of the exhaust fan is regulated by a:

controller or rheostat 36, where an electric. motor is used for motive power, but it is to be understood that other regulating means may be employed where other power is used. This electric controller or rheostatis secured inside of the end car platform 37 within convenientreach of the car operator, and 'electric wires 38 connect the rheostat or controller with the motor upon the car roof.

,An insulating base 39 is placed under the motor on the car roof, all of the exhaust mechanism being incased within the housed fan chamber 31. e

Referring particularly to Figs; 6 and 7,

the register faces comprise an annularrim 40 having openings 41 drilled therethrough, for inserting fastening means for securing same to the supplementalcar roof, and the body of these register faces comprise three concentric webs or plates 42 merging centrally into a hub'48' leaving openings 44 therein. The outer annular rim 40 is integrally formed withia' rear wall 45, which may be of the formation shown in 7, having a series of annular openings 46, or may be of the conventional register design. Intermediate the fixedfront and rear walls is an annular movable plate 47 locked to a;

screw or axle 48, said plate being of the same construction and formation as that shown in Fig. 6, so that when the central axle or .screw 148 is rotated in either direction, the intermediate plate 47 'willrevolvetherewith andpartially coverthe openings 44 formed in the front-of the device. As the intermediate plate 47 is moved, it will decrease the amount of free area through the register faces. The position of this damperfineehanism will be determined by the use o'fananemometer, it bemg theintention to secure an equal veloc-' ity of outgoing air through all ports regardless oftheirproximity to the fan, thereby securing a consequent equal How of air. When this system is first installed within'the car,- the respective register faces are first tested and accurately set by means of the set screw 48 -whichlocks the intermediate plate 47 in proper position.

Referring to-Fig. 5, the exhaust air duct 24 is of slightly different,formation'than that heretofore described, by reason of the ,7 cause the fan tooperate pressure equivalent to i -Kile amount ofvacuun'i prorlucedif The tipWard tendencylower supplemental arched roof 49 made of any suitable composition, such as veneer,

inetalf sheathing, wood or canvas, havin a series of register openings 50. WItht 1s system 'apartial vacuum will be created WithinfillQ'CilTbOdY, due to themotion of the exhaust fan. The vacuum-created will ainst a dynamic of the air within the (tfll'.l)()(ly produced by out any discomfort due to the exhaust fan in motion will, in turn, produce an inward movement of air at the various fresh air intakes, these being so distributed as to produce an even constant and imperceptible movement of freslbair throughout thelower portion of the car body. The

.air passing into the car body from the air intakes is conducted throu h and 'over the car'heaters, thereby tempering the admitted air and. preventing a consequent reduction in the temperature of-the car.

Due partially to the tendency of the heat -ed air torise, aided in turn by the movemerit of the exhaust fan, with its conseuent partial vacuum, as indicated above, tere will be an upwardmovement of air throughoutvthe car body, causin the foulor 'vitiated air to rise t rough t e register faces positioned'in the exhaust chamber of the car roofg Due to the fact that therespective areas of intakes and outlets are proportioned, as indicated in the specification, to admit of the movement ofair through them at avmaximum velocity not to exceed 300 feet per minute, the consequent circulation of anproduced in the car will be;im--

thest away from the fan, due to the resistance of the ducts increasing with their distance from the fan,

.What I claim as 'new and desire to secure by Letters Patent is: y

1. I'na mechanical car ventilating syst'en'i, a series of-fresh air in-takes formed in the lower portion of the car body, a concealed exhaust chamber formed in the car roof, said exhaustrhamber 'havinga series of register facesv capable of exact adjustment .to permitan equal amount of air to be withdrawn irrespective of the location, of the register facesto the exhausting means, and means for exhausting the vitlated air from the car body through the register faces into the exhaust chamber, substantially as described.

2. In a mechanical car ventilating-system, a series of fresh air in-takes formed along the sides :of the car floor, air passages connecting sthe iair, in-takes with a casing. about the car .1 heaters for tempering the admitted air flowing theretln'ough, a concealed exhaustchamber in theroof of the car. having register faces capable of exact' adjustment to permit an equal amount-of an to be Wltlld'lElWn 1r-.

respective offthe location of t-he l 'egister faces to the exhausting means, and means for exhausting the vitiated air from the car through -the register faces ofthe exhaust ,cha-mber,-substantially as described; I

In a mechanical car ventilating 'stem, aseries of fresh air i i-takes formed in the lower portion of the car body, an elongated concealed exhaust chamber formed in the carvroof, having register faces therein, ,the side walls of the exhaust chamber being positioned with respect to the deck sash windows so'as not to' interfere with their movement and operation, and meansfor X hansting the vitiated air from the carbody chamber, substantially as described.

4:. In a car ventilating system, a series of fresh air in-takes formed in the lower portion of the car body, and a concealed exhaiist chamber formed in the car roof, having register t'aces therein, the side walls of the exhaust chamber being positioned with respect to the deck sash windows so as not to' interfere with their movement. and operation substantially as described. v DVIGHT I. COOKE.

Witnc-sses; ULKE'I: BANKING,

Pnmsozx' W. BANNING.

.throngh the register faces of the'exhaust" 

